package com.wenda.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import com.wenda.entity.User;

public class CheckFilter implements Filter {
	@Override
	public void init(FilterConfig filterConfig) throws ServletException {
	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
			throws IOException, ServletException {
		// 获取session
		HttpServletRequest req = (HttpServletRequest) request;
		HttpSession session = req.getSession();
		User user = (User) session.getAttribute("user");
		if(user == null) {
			req.getRequestDispatcher("/WEB-INF/login.jsp").forward(req, response);
		} 
		if(user.getRoleId() > 5 || user.getRoleId() <= 3 ) {
			req.setAttribute("msg", "你尚不具备该权限");
			req.getRequestDispatcher("/WEB-INF/public/msg.jsp").forward(req, response);
		}
		chain.doFilter(req, response);
	}
	@Override
	public void destroy() {
	}
}
